81346678 has 8 divisors (see below), whose sum is σ = 139451472. Its totient is φ = 34862856.

The previous prime is 81346673. The next prime is 81346693. The reversal of 81346678 is 87664318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81346673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905225 + ... + 2905252.

It is an arithmetic number, because the mean of its divisors is an integer number (17431434).

Almost surely, 2^81346678 is an apocalyptic number.

81346678 is a deficient number, since it is larger than the sum of its proper divisors (58104794).

81346678 is a wasteful number, since it uses less digits than its factorization.

81346678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5810486.

The product of its digits is 193536, while the sum is 43.

The square root of 81346678 is about 9019.2393249098. The cubic root of 81346678 is about 433.2912717886.

The spelling of 81346678 in words is "eighty-one million, three hundred forty-six thousand, six hundred seventy-eight".